I am not going to translate it as I myself don't understand all the words exactly, and because it's so poetic it'll be hard to translate exactly, and even then it'd lose all its beauty and depth of emotion.

Sagar, I didn't post it in Hindi because I didn't type it, I copy-pasted it from elsewhere. So, too lazy to type in Hindi.

"Simtee hui yeh ghadiyan" is indeed a great song.

The reason that this Roman writing is so complex is to accommodate Urdu. Roman script is basically suitable to write English. We use it to write in Hindi also but there are some sounds that are in Hindi but not in English. And there are some sounds which exist only in Urdu but not in Hindi. In order to accommodate those sounds it is required to come up with a notation system so that Roman can be used to write Urdu. It's not a topic that can be explained very well, but I hope that makes a little sense.

This writing is not perfect but very close.

For people who don't care about writing accurately, or who don't know what "vartani" is, it doesn't matter, and there is no need to write in such a complex notation.